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APTIM <br />November 2, 2018 (revised from October 31, 2018) <br />Mr. lames Gray, Jr. <br />Indian River County Public Works - Director of Natural Resources <br />180127th St, Building A <br />Vero Beach, FL 32960 <br />Subject: Indian River County, FL <br />Sector 3 - 2018006 - Work Order #4 <br />Pre -Construction Biological Monitoring <br />Dear James: <br />Aptim Environmental & Infrastructure, Inc. <br />2481 NW Boca Raton Blvd. <br />Boca Raton, FL 33431 <br />Tel: +1 561 391 8102 <br />Fax: +1 561 391 9116 <br />www.aptim.com <br />This proposal outlines a scope of work for Aptim Environmental & Infrastructure, Inc. (APTIM) to provide <br />professional services to Indian River County (the County) in support of pre -construction biological monitoring <br />efforts required for the Indian River County Sector 3 Beach and Dune Renourishment Project. The Biological <br />Monitoring Plan developed for the Sector 3 project during permitting will require pre- and post -construction <br />biological monitoring adjacent to the project area to monitor for potential secondary impacts to nearshore natural <br />hardbottom. This task addresses the scope of work to complete the pre -construction biological monitoring, and <br />is based on early coordination with FDEP and the FDEP Standard Operating Procedures (SOP) for Nearshore <br />Monitoring of Beach Nourishment Projects (FDEP, 2016). The pre -construction biological monitoring proposed <br />herein includes hardbottom edge mapping and establishment and monitoring of permanent crosshore transects. <br />If additional or expanded tasks are identified by the regulatory,agencies during the permitting process, APTIM will <br />notify the County, and a mutually -agreeable change order or additional Work Order will be executed. <br />The costs associated with this work order were developed following the provisions of the Professional Services <br />Agreement between Indian River County and APTIM, dated January 9, 2018, to provide engineering and biological <br />support services for the Sector 3 (Wabasso Beach) Beach and Dune Renourishment Project (RFQ#2018006). <br />Scope of Work <br />• Hardbottom Edge Mapping: <br />APTIM shall map the position of the nearshore hardbottom edge for the entire Sector 3 project area, including <br />1000 feet north (updrift) and 3000 feet south (downdrift) of the project area (R-20 to R-55) for a length of <br />approximately 7.3 miles. A buoy with a Differential Global Positioning System (DGPS) antenna linked to a topside <br />laptop computer running HYPACK navigational software will be towed by divers to record the position of the <br />nearshore hardbottom edge. The divers will follow the inshore contour of the most prominent hardbottom-sand <br />interface. The purpose of the survey is to provide a baseline for comparison with post -construction hardbottom <br />-edge-delineatin , - - - - - - - - - - - -- - <br />O Installing and Monitoring Permanent Transects: <br />Thirty (30) permanent transects will be established along the length of project influence, which includes 1000 feet <br />north (updrift) and 3000 feet south (downdrift). This includes nineteen (19) biological monitoring transects spaced <br />approximately 2000 feet apart and eleven (11) sediment -only transects located in areas where the ETOF comes <br />fliuJI7370,02,Q 13 <br />